Interest Adjustment Date

The Interest Adjustment Date (IAD) is the date on which a borrower's regular mortgage payment schedule officially begins in British Columbia. Because most lenders cycle payments from the first of the month, if a purchase completes mid-month, the borrower pays a one-time interest-only charge covering the period from the completion date to the IAD. This bridging charge is sometimes called the interest adjustment amount and is typically collected at completion or on the IAD itself.

Lenders in British Columbia generally structure mortgage payment cycles to begin on the first day of a month, so when a completion date falls mid-month, there is a gap of days during which the mortgage principal is already advanced but the regular payment cycle has not yet started. The IAD resolves this by establishing a clean starting point, and the borrower owes interest only — not principal — for those intervening days. The exact calculation is based on the outstanding principal multiplied by the daily interest rate for the number of days between completion and the IAD.

The interest adjustment amount is calculated by taking the mortgage principal advanced on completion, applying the mortgage's annual interest rate converted to a daily rate, and multiplying it by the number of days from the completion date up to (but not including) the IAD. Because Canadian mortgages are typically compounded semi-annually, the effective daily rate reflects that compounding convention. Borrowers should ask their lender to provide a written breakdown of this calculation before completion.

Yes. In British Columbia, your first full mortgage payment — covering both principal and interest under your regular amortisation schedule — is due one payment period after the IAD. For example, if your IAD is the first of the month following completion, your first regular monthly payment would typically be due on the first of the month after that. Confirming this timeline in writing with your lender before completion helps avoid missed payment issues.

Standard form contracts of purchase and sale used in British Columbia may reference mortgage financing conditions but do not universally set out the IAD in detail, as the IAD is primarily a term of the mortgage commitment letter issued by the lender. Buyers should review their mortgage commitment carefully to identify the IAD and factor the associated interest adjustment cost into their closing cost budget. A BC real estate licensee is governed by the Real Estate Services Act (RESA) and BCFSA Rules and must not give specific mortgage advice, so buyers should direct IAD questions to their mortgage professional.

Yes. If the parties agree to set the completion date on the first business day of the month — or on whatever date the lender designates as the payment cycle start — the gap period is eliminated and no interest adjustment charge arises. In practice, completion dates in British Columbia are negotiated between buyer and seller and recorded in the Contract of Purchase and Sale, so buyers who wish to minimise closing costs may request a month-start completion date, subject to the seller's agreement.

Property Transfer Tax (PTT) under the BC Property Transfer Tax Act is triggered by registration of the transfer at the Land Title Office, which in BC occurs on the completion date — not the IAD. PTT rates are 1% on the first $200,000 of fair market value, 2% on the portion from $200,001 to $3,000,000, 3% on amounts above $3,000,000 for residential property, and an additional 2% on residential value exceeding $3,000,000. The IAD has no bearing on PTT calculations or exemption eligibility.

Yes. The IAD applies to any mortgage-financed purchase in British Columbia, including purchases of strata lots governed by the Strata Property Act (SBC 1998, c. 43). Purchasing a strata lot carries additional closing considerations — such as reviewing a Form B Information Certificate and any Form F certificate of payment — but these strata-specific documents are independent of the mortgage IAD, which is determined solely by the lender's payment cycle and the completion date.

Under the Real Estate Services Act (RESA) and BCFSA Rules, BC licensees must act in the best interests of their clients and provide them with material information relevant to the trade in real estate. While explaining the concept of an IAD in general terms may fall within a licensee's duty of competence and disclosure, providing specific mortgage calculations or advice is outside a licensee's permitted scope and should be referred to a mortgage broker or the lender. Licensees who fail to meet their professional obligations are subject to BCFSA enforcement.

When a property in British Columbia is acquired through a court-ordered sale arising from foreclosure proceedings — which in BC are judicial proceedings conducted under the BC Supreme Court Civil Rules and the Law and Equity Act — the successful purchaser typically obtains a new mortgage for which the lender will establish a new IAD in the ordinary manner. The foreclosure process itself does not eliminate the IAD concept; it remains a standard feature of any new mortgage arranged by the purchaser to fund the court-ordered sale.